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MetSound™ Low Frequency Circular Silencers |
As an option to ST fans, attenuators provide excellent attenuation with minimal maintenance. MetSound™ double-wall circular silencer is offered without an internal bullet for applications requiring low frequency sound absorption in positive or negative pressure systems.
Inch-Pound (Imperial) Dimensions and Weights
|
Duct Diameter (in.) |
18² |
20² |
24² |
30² |
36² |
42² |
48² |
50² |
54² |
60² |
66² |
72² |
|
Outside Diameter (in.) |
26² |
28² |
32² |
38² |
44² |
50² |
56² |
58² |
62² |
68² |
74² |
80² |
|
Length (in.) |
46² |
50² |
58² |
70² |
82² |
94² |
106² |
110² |
118² |
130² |
142² |
154² |
|
Shell Thickness (ga.) |
14 |
14 |
14 |
14 |
14 |
14 |
14 |
14 |
14 |
14 |
14 |
14 |
|
Wt. Lbs. |
120 |
150 |
270 |
400 |
500 |
575 |
700 |
730 |
800 |
1,000 |
1,100 |
1,200 |
Dynamic Insertion Loss (DIL)
|
Center Frequency |
||||||||
|
Silencer Size (Dia. x Length) |
63 |
125 |
250 |
500 |
1000 |
2000 |
4000 |
8000 |
|
18² x 46² |
2 |
5 |
18 |
35 |
18 |
8 |
6 |
5 |
|
20² x 50² |
4 |
5 |
12 |
34 |
18 |
7 |
5 |
5 |
|
24² x 58² |
2 |
3 |
16 |
39 |
13 |
7 |
6 |
4 |
|
30² x 70² |
2 |
5 |
16 |
31 |
12 |
7 |
6 |
3 |
|
36² x 82² |
3 |
3 |
20 |
18 |
9 |
8 |
6 |
2 |
|
42² x 94² |
4 |
7 |
19 |
20 |
9 |
8 |
5 |
2 |
|
48² x 106² |
4 |
7 |
20 |
15 |
10 |
9 |
4 |
1 |
|
50² x 110² |
4 |
7 |
20 |
15 |
10 |
9 |
4 |
1 |
|
54² x 118² |
4 |
4 |
20 |
17 |
10 |
10 |
3 |
1 |
|
60² x 130² |
4 |
7 |
25 |
17 |
9 |
10 |
3 |
1 |
|
66² x 142² |
4 |
7 |
25 |
17 |
9 |
10 |
3 |
1 |
|
72" x 154" |
4 |
8 |
28 |
16 |
9 |
10 |
3 |
1 |
The acoustical absorption media is glass-fiber packed under compression. The high density glass fiber is made to provide the published acoustical and aerodynamic performance.
Silencers over 24² in diameter shall be manufactured with lifting lugs.